Sapphire Tube Descriptions
Sapphire is a transparent single crystal alumina material, which has excellent chemical stability and excellent mechanical, thermal and optical properties. As raw materials, its performance is much better than glass, quartz and other mass produced transparent materials.
Sapphire Tube Specifications
|
Item
|
Unit
|
Typical Values
|
|
Crystal Structure
|
-
|
Hexagonal
|
|
Density
|
g/cm3
|
3.97
|
|
Physical Properties
|
|
Poisson's Ratio
|
-
|
0.18～0.29
|
|
Vickers Hardness
|
Gpa
|
22.5
|
|
Young's Modulus
|
Gpa
|
470
|
|
Flexural Strength
|
MPa
|
690
|
|
Tensile Strength
|
Mpa
|
2250
|
|
Compressive Strength
|
MPa
|
2940
|
|
The Thermodynamic Property
|
|
Melting Point
|
ºC
|
2053
|
|
Thermal Conductivity at 20℃
|
W/m•k
|
42
|
|
CLTE 40-400℃
|
10-6/℃
|
7.0
|
|
Specific Heat Capacity
|
J/(g・K)
|
0.75
|
|
Electrical Property
|
|
Dielectric Strength
|
MV/m
|
48
|
|
Dielectric Constant at 20℃
|
MHz
|
9.3
|
|
Dielectric Loss at 20℃
|
MHz
|
<1.4x10-4
|
|
Volume Resistivity at 20℃
|
Ω•cm
|
>1.0x1014
|
|
Volume Resistivity at 500℃
|
Ω•cm
|
1.0x1011
|
|
Index of Reflection
|
|
589nm
|
No=1.768
|
Ne=1.760
|
| |
|
|
|
|
Sapphire Tube Features
-High Strength, High Rigidity, High Anti-Abrasion, High Anti-Heat, High AntiCorrosion Characteristics, and High Anti-Plasma Characteristics.
Because of these characteristics, Single Crystal Sapphire is widely used for precision mechanical parts.
-Stable Dielectric Constant, Very Low Dielectric Loss, Good Electrical Insulation.
Single Crystal Sapphire is used as a material for substrates in super-high frequency regions. It is also used as an insulation material and microwave window. Single Crystal Sapphire has become indispensable in the Electronics Industries.
-Excellent Light Transmission.
Single Crystal Sapphire is used for various kinds of vacuum equipment, windows in reaction furnace, scanner windows and caps for optical communication due to its excellent mechanical characteristics and heat resistance.
-Good Thermal Conductivity and High Heat Resistance.
Excellent thermal conductivity at low temperatures allows Single Crystal Sapphire as a transparent material to be used in many diverse fields requiring thermal conduction and heat radiation.
Sapphire Tube Applications
(1)High Brightness LED
(2)HB-LED Semiconductor, Piezoelectric Semiconductor, Superconductor, Thin Film Substrate.
(3)MR Sensor, Precision Resistor
(4)Optical Devices
(5) Thin Film HICO
Single Crystal Sapphire is a widely used substrate material for blue, green, ultraviolet and white LEDs. It has excellent features as a base substrate for GaN deposition and great mass-productivity. In addition, it can meet future larger-size demand.
Single Crystal Sapphire is used as a base substrate in thin film deposition because its lattice alignment matches a variety of semiconductor materials combined with excellent thermal and chemical stability.
Sapphire Tube Packaging
SAM’s Sapphire Tube is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.
Sapphire Tube FAQs
Q1. What is a Sapphire Tube?
A sapphire tube is a cylindrical component made from synthetic sapphire, known for its exceptional mechanical, thermal, and chemical properties. These tubes are used in various high-performance applications where durability and reliability are critical.
Q2. Can Sapphire Tubes be customized?
Yes, sapphire tubes can be customized to meet specific requirements, including different diameters, lengths, wall thicknesses, and surface finishes. Customization can also include features like flanges, holes, and specific optical coatings.
Q3. What is the difference between Sapphire Tube and Quartz Tube?
Strength and Hardness: Sapphire is harder and stronger than quartz.
Chemical Resistance: Sapphire offers better resistance to a wider range of chemicals.
Thermal Performance: Both materials have excellent thermal properties, but sapphire can withstand higher temperatures and thermal shock better.
Optical Properties: Sapphire provides better optical clarity and lower light scattering across a broader wavelength range.
